Rolling-mill



, Patented Aug. 2, Issa. G. a. McMunTnY.

ROLLING MILL.

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No. 608,382. Patented Aug. 2, |898.

G. a. MCMURTRY.

ROLLING MILL.

(Application filed Dec. 18, 1897.)

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UNITED Y' STATES -P .fiTnNr @rrrcn.

GEORGE G. MCMRTRY, OF ALLEGHENY, PENNSYLVANIA.

ROLLING-MILL.

SPECIFICATION forming part of Letters Patent No. 608,382, dated August2, 1898. Application filed December 16, 1897. Serial No. 662,145. (Nomodel.)

T0 a/ZZ whom it muy concern:

Be it known that I, GEORGE G. MCMURTRY, a citizen of the United States,residing at Allegheny, in the county of Allegheny and State ofPennsylvania, have invented or discovered certain new and usefulImprovements in Rolling-Mills, of Which improvements the following is aspecification. n Y l It has heretofore been customary in rolling bars orrods to dip them into or causevthem to pass through a tank of Water asthey leave the finishing-rolls for the purpose of rapidly chilling thesame, and thereby cause lthe cracking off of the scale from thesurfaces. Such means for boshing the bars or rods are ineffective toproduce the desired rapid chilling and the removal of the scale.

The object of the present invention is to provide means whereby a rapidreduction of temperature can be effected and the scale forced off fromthe bars.

YThe invention is hereinafter more fully drescribed and claimed.

In the accompanying drawings, forming a part of this specification,Figures 1 and 1a show in plan view a finishing-mill, a shear mechanism,and an interposed feed-table having my improvements applied thereto.Fig. 2 is a view, partly in section and partly in side elevation, of thefinishing-mill and the portion of the feed-table adjacent thereto. Fig.

3 isa sectional elevation of the parts shown in Fig.` 2; and Fig. l is asectional view, the plane of section being indicated by the line IV IV,Fig, la.

In the practice of my invention the finishing-rolls 1 and shearmechanism 2 may be of any suitable or known forni or construction.Between the finishing-rolls and shear mechanism I arrange a feed-tableof any desired form or construction, consisting of the positively-drivenfeed-rollers 3 and interposed aprons at. As shown in Fig. 1, thefinishingrolls andthe feed-tables are arranged in such relation to eachother that a bar or rod will be fed along adjacent to one side'of thetable, and suitable transfer mechanism 5 is employed for laterallyshifting the bar or rod to or toward the opposite side of the tableafter it has left the finishing-roll, Where it is held by asuit. blestop 6 until a number of such bars are collected and arranged side byside and then'fed into the shear mechanism, Where they are divided upinto suitable sections. As a'cracking off of the scale can be moreefficiently attained by a rapid reduction from a high to a lowtemperature, suitable means are provided for effecting such chilling asthe front end of the bar or rod emerges fromthe rolls. This'chillingmechanism consists of a pipe 7,"arranged above the table in orapproximately in line with the path of movement of the bar from thefinishing-rolls onto -the table and vprovided With perforations ornipples adapted to direct streams of Water down onto the bar. This pipe7 is connected by a pipe S to a suitable valve mechanism 9,Which in turnis connected to a suitable source of Water-supply or other liuid adaptedto effecta rapid reduction of temperature. In order to render theoperation of the chilling mechanism automatic, suitable operatingdevices or mechanism are connected to the valve, such `operatingmechanism being adapted to be shifted to open the valve by the movementof the bar or rod onto the table and to be automatically closed afterthe rear end of the bar has passed beyond the valve-shifting mechanism.A suitable or convenient form or construction of such valve-operatingmechanism consists of a lever 10, pivotally mounted on apost or support11 and connected on one side of its pivotal point tothe stem of thevalve 9. On the same side of the pivotal point a Weight 12 is attachedto the-lever, so as to shift the valve to a closed position. Theopposite end of the lever is connected by a link 13 to an arm 14,secured to a shaft 15,Wl1ich is mounted in suitable bearings on thefeed-table and provided With an arm or trigger 16, projecting up intothe path of movement of the bar or rod as it comes from thefinishing-rolls.

It is preferred to provide a shield 17 vnear the front end of thefeed-table, so as to depress the end of the bar as it comes from theroll and cause it to strike' the trigger. It is preferred to arrangenozzleslS so that streams ofvvater will be directed down upon the bar orrod as it passes through the shield,and in order to prevent thesenozzles from interfering With the movement of the'rod their ends Withinthe shield are bent in the direction of the movement of the bar or rod.It is preferred to divide the pipe 7 into two or more IOO sections, eachsection being of a length equal to the normal length of the barsproduced. One of these sections, as 7, is arranged, as shown,immediately above the line of movement of the bar or rod as it comesfrom the table and the other section, 7, is arranged above the oppositeside of the table in the rear of the first section. In using` thisapparatus the bar orrod is moved along the table until its front endabuts against the stop t', adjacent te the shear mechanism. rlhe bar orrod is then shifted by the transfer mechanism to the opposite side ofthe table, where it will be subjected to the action of streams of waterfrom the pipe-section 71. Vhen the bars or rods are of normal length,they will be acted upon by streams of water from the pipe-section 7until they have passed out of the rolls, and then they will be subjectedto streams of water from the pipe-section 7" after they have beenshifted to the opposite side of the table. As both pipe-sections 7 7 arecontrolled by the same valve mechanism, the pipe or rod which has beenshifted by the transfer mechanism will not be subjected to or acted uponby streams of water until the next bar or rod moves onto the feed-table,thereby opening the valve. lf desired, however, each pipe-section maybeprovided with an independent controlling-valve.

It is characteristic of my improvement that the cooling medium, whetherwater or gas, is applied at a time and in a manner most effective for arapid cooling of the bars or rods and for the removal of the scaleloosened by such rapid chilling.

'lhe water or other cooling medium should be under such pressure as tostrike with considerable force against the bars or rods, so as torapidly red nee their temperature below a point at which oxidation willoccur and to torce off any scale which is loosened by the rapidchilling.

No claim is made, broadly, herein to an arrangement of pipe or pipes insuch relation to articles passing along a feed-table that a fluid willbe directed toward or onto such artieles, the ilow of fluid through suchpipe or pipes being controlled by the movement of the articles on thetable, as such construction, broadly considered, forms thesubject-matter of an application, Serial No. 662,111-, hlled by meDecember 1G, 1897.

I claim herein as my inventionl. The combination of afeed-table,oneportion of which is adapted te be used for the storage of barsorrods, a movable stop at the end of the feed-table, one or more linesof pipe arranged in such relation to the table that streams of coolingfluid will be directed 011 the bars or rods on the table, and meanscontrolled by the bars or rods for controlling the flow of fluid throughsuch pipes, substantially as set forth.

2. The combination of a feed-table,trailsfer mechanism for laterallyshifting articles on the feed-tables, two lilies of pipe arrangedrespectively on opposite sides of the table and provided with dischargeopenings or nipples, an automatically-closing valve for controlling theflow of such iluid through the pipes and means operative by the articleas it is being moved on the table for opening the valve, substantiallyas set forth.

In testimony whereof I have hereunto set my hand.

GEORGE G. MUNURTRY.

lVi tnesses:

DARWIN S, WoLco'r'r, J. (il. McCmmicK, Jr.

